Consistent ignition energy and fueling are vital when tuning the 2.5-litre 5-cylinder engine for higher boost levels. As you push your ST225 on the road or track, factory fueling components can struggle to keep up. Prevent lean conditions with high-flow Fuel Injectors and uprated Fuel Pumps. Eliminate spark blowout across the entire rev range by upgrading to heavy-duty Coil Packs, and for those looking for a plug-and-play power bump, explore our Performance Chips (RaceChip) to safely manipulate sensor signals for immediate gains.